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Cosmology Forum

Join in expert discussion on topics revolving around cosmology. Cosmology is the origin, evolution, structure and eventual fate of the universe.

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Exponential expansion and Higgs mechanism

Oct 30, 2011 · Replies 15 · Nov 2, 2011

Replies: 15

Views: 4K

The sun moves through space, right?

Nov 1, 2011 · Replies 8 · Nov 1, 2011

Replies: 8

Views: 4K

Why do scientists believe the expansion of the universe is accelerating?

Aug 30, 2006 · Replies 11 · Oct 31, 2011

Replies: 11

Views: 6K

If Universe is Expanding at an Accelerated Rate Why

Oct 4, 2011 · Replies 22 · Oct 31, 2011

Replies: 22

Views: 6K

Dark Matter Clumping: Unanswered Questions

Oct 16, 2011 · Replies 26 · Oct 31, 2011

Replies: 26

Views: 8K

Could the Universe's Expansion be Compared to Oil on Water?

Oct 30, 2011 · Replies 3 · Oct 30, 2011

Replies: 3

Views: 3K

How can we measure time before the Big Bang?

Oct 26, 2011 · Replies 26 · Oct 30, 2011

Replies: 26

Views: 6K

Gravity and galaxy rotation curves: G vs. dynamics modifications?

Oct 14, 2011 · Replies 38 · Oct 28, 2011

2

Replies: 38

Views: 9K

Quantum fluctuations and Spacetime

Oct 25, 2011 · Replies 3 · Oct 28, 2011

Replies: 3

Views: 4K

Andromeda Galaxy colliding with the Milky Wa

Oct 25, 2011 · Replies 14 · Oct 28, 2011

Replies: 14

Views: 5K

Accelerating expansion of universe is an illusion

Oct 1, 2011 · Replies 44 · Oct 27, 2011

2

Replies: 44

Views: 14K

PhD Astronomy Prof: Paucity of evidence for the Big Bang

Oct 21, 2011 · Replies 19 · Oct 27, 2011

Replies: 19

Views: 5K

Time dilation & the first galaxies

Oct 26, 2011 · Replies 2 · Oct 27, 2011

Replies: 2

Views: 2K

How close to constraining DE to simply be Lambda?

Oct 26, 2011 · Replies 0 · Oct 26, 2011

Replies: 0

Views: 2K

Are cycles and entropy compatible?

Oct 17, 2011 · Replies 82 · Oct 26, 2011

3

Replies: 82

Views: 13K

What is expansion ? A thought experiment

Oct 18, 2011 · Replies 22 · Oct 25, 2011

Replies: 22

Views: 5K

Is New Space Being Created Between Galaxies?

Oct 13, 2011 · Replies 8 · Oct 25, 2011

Replies: 8

Views: 4K

Time dilations and our perspective

Oct 24, 2011 · Replies 2 · Oct 24, 2011

Replies: 2

Views: 2K

Universe cyclic model and energy loss

Jul 6, 2008 · Replies 6 · Oct 24, 2011

Replies: 6

Views: 5K

Big Bang Theory and Shape of the Universe

Oct 23, 2011 · Replies 6 · Oct 24, 2011

Replies: 6

Views: 3K

Age of the Universe - is it meaningful?

Oct 6, 2011 · Replies 22 · Oct 23, 2011

Replies: 22

Views: 5K

Loop bounce and geometric entropy (re: Bill A's question)

Oct 21, 2011 · Replies 6 · Oct 23, 2011

Replies: 6

Views: 3K

How is the degree of vacuum in the Universe measured?

Oct 18, 2011 · Replies 4 · Oct 23, 2011

Replies: 4

Views: 3K

Is there any way how to dispove that universe is a computer simulation?

Oct 22, 2011 · Replies 12 · Oct 22, 2011

Replies: 12

Views: 6K

Is the Energy of the Universe Really Zero?

May 7, 2007 · Replies 20 · Oct 21, 2011

Replies: 20

Views: 8K

Hubble constant depend on expansion model?

Oct 20, 2011 · Replies 3 · Oct 21, 2011

Replies: 3

Views: 2K

Expanding Space: Explaining the Mystery

Oct 20, 2011 · Replies 4 · Oct 21, 2011

Replies: 4

Views: 2K

Are the Outer Bands of Galaxies Moving Faster Than the Speed of Light?

Oct 7, 2011 · Replies 10 · Oct 20, 2011

Replies: 10

Views: 5K

The Universe: A Mobius Strip of Possibilities?

Oct 20, 2011 · Replies 2 · Oct 20, 2011

Replies: 2

Views: 2K

Have I seen the layers of parallel universes.

Oct 17, 2011 · Replies 14 · Oct 18, 2011

Replies: 14

Views: 5K

Space-time created ahead of matter - how far?

Oct 8, 2011 · Replies 37 · Oct 17, 2011

2

Replies: 37

Views: 8K

Nature of Dark Energy and a cracker in the sand

Oct 13, 2011 · Replies 21 · Oct 17, 2011

Replies: 21

Views: 4K

Understanding the Universe: Explaining Light Speed and Expansion

Oct 8, 2011 · Replies 10 · Oct 15, 2011

Replies: 10

Views: 4K

Reevaluating the Big Bang Theory: Challenging the 13.7 Billion Light Year Limit

Oct 10, 2011 · Replies 26 · Oct 14, 2011

Replies: 26

Views: 7K

Conflict between reionization and the most distant object

Oct 11, 2011 · Replies 6 · Oct 13, 2011

Replies: 6

Views: 3K

What is a parallel universe and how does it relate to physics?

Oct 11, 2011 · Replies 5 · Oct 13, 2011

Replies: 5

Views: 3K

Why the early universe didn't collapse into a black hole?

Sep 7, 2011 · Replies 18 · Oct 12, 2011

Replies: 18

Views: 11K

Could Protons and Electrons Explain the Big Bang's Origins?

Oct 10, 2011 · Replies 7 · Oct 12, 2011

Replies: 7

Views: 3K

Poll

Effects of dark energy on our solar system

Oct 10, 2011 · Replies 6 · Oct 12, 2011

Replies: 6

Views: 3K

Unveiling the Mystery of Antimatter Galaxies: Modern Cosmology's Perspective"

Oct 10, 2011 · Replies 5 · Oct 11, 2011

Replies: 5

Views: 3K

Universe's full cycle: explosion - implosion

Oct 11, 2011 · Replies 1 · Oct 11, 2011

Replies: 1

Views: 2K

Proof of Red Shift that indicates Expansion

Oct 8, 2011 · Replies 26 · Oct 10, 2011

Replies: 26

Views: 10K

Cyclic Universe - Fixed in Size but Divided into 8 Sections

Oct 9, 2011 · Replies 7 · Oct 9, 2011

Replies: 7

Views: 3K

How many dimensions compose reality?

Sep 16, 2006 · Replies 15 · Oct 9, 2011

Replies: 15

Views: 10K

Dark matter or variable gravity?

Oct 6, 2011 · Replies 13 · Oct 9, 2011

Replies: 13

Views: 6K

General relativity: a poor description of spacetime

Oct 7, 2011 · Replies 10 · Oct 8, 2011

Replies: 10

Views: 4K

Explanation for gravity and mass?

Oct 8, 2011 · Replies 1 · Oct 8, 2011

Replies: 1

Views: 3K

Any difference between type 1a supernovae and a novae

Oct 5, 2011 · Replies 8 · Oct 8, 2011

Replies: 8

Views: 12K

What Are the Flaws in Stenger's Argument on the Origins of Order?

Oct 6, 2011 · Replies 3 · Oct 7, 2011

Replies: 3

Views: 3K

Can Regular Matter and Dark Matter Be the Same Thing in Higher Dimensions?

Oct 7, 2011 · Replies 1 · Oct 7, 2011

Replies: 1

Views: 4K

How do I measure the distance of a galaxy using conventional terms?

Oct 6, 2011 · Replies 8 · Oct 7, 2011

Replies: 8

Views: 3K

Greatest cosmic energy detected by Veritas

Oct 7, 2011 · Replies 1 · Oct 7, 2011

Replies: 1

Views: 2K

What is the Geometry of Spacetime Near the Big Bang?

Aug 17, 2011 · Replies 17 · Oct 7, 2011

Replies: 17

Views: 7K

How Can I Use the Two-Point Correlation Function to Compare Image Structures?

Oct 5, 2011 · Replies 6 · Oct 7, 2011

Replies: 6

Views: 6K

What is the relationship between dark matter and gravity?

Apr 29, 2011 · Replies 25 · Oct 6, 2011

Replies: 25

Views: 6K

Black Hole Radiation: Types, Perfect Blackbody & Collapsing Bodies

Sep 21, 2011 · Replies 26 · Oct 6, 2011

Replies: 26

Views: 6K

Wasn't the universe more disordered in the past?

Oct 5, 2011 · Replies 4 · Oct 5, 2011

Replies: 4

Views: 2K

Info on the supernova accelerating space Nobel prize.

Oct 4, 2011 · Replies 2 · Oct 5, 2011

Replies: 2

Views: 2K

What are the limits of redshift?

Oct 2, 2011 · Replies 9 · Oct 5, 2011

Replies: 9

Views: 6K

Photons vs neutrinos energy ratio

Oct 1, 2011 · Replies 4 · Oct 4, 2011

Replies: 4

Views: 3K

Is it practically possible to look back in time?

Oct 2, 2011 · Replies 11 · Oct 4, 2011

Replies: 11

Views: 4K

There is more meaning in the universe than there is matter

Oct 3, 2011 · Replies 1 · Oct 3, 2011

Replies: 1

Views: 3K

Accurate distance gauge out to z ~ 4 alleged (AGN)

Sep 28, 2011 · Replies 3 · Oct 2, 2011

Replies: 3

Views: 3K

From time to timescape – Einstein’s unfinished revolution?

Dec 24, 2009 · Replies 74 · Oct 1, 2011

3

Replies: 74

Views: 14K

How Does Accelerating Expansion Affect Space Density and Interjection?

Sep 9, 2011 · Replies 14 · Oct 1, 2011

Replies: 14

Views: 5K

The universe's size : always infinite?

Jun 15, 2011 · Replies 47 · Sep 30, 2011

2

Replies: 47

Views: 12K

Discussing the Big Rip Theory: Have You Heard About It?

Nov 25, 2009 · Replies 10 · Sep 30, 2011

Replies: 10

Views: 8K

More on faster than light neutinos

Sep 30, 2011 · Replies 1 · Sep 30, 2011

Replies: 1

Views: 2K

How Should We Visualize Dark Matter Around Spiral Galaxies?

Sep 29, 2011 · Replies 2 · Sep 30, 2011

Replies: 2

Views: 3K

Existance of time before big bang

Aug 20, 2011 · Replies 31 · Sep 29, 2011

2

Replies: 31

Views: 8K

Big Bang or Multiverse: Which Theory Explains Our Universe Better?

Sep 17, 2011 · Replies 10 · Sep 29, 2011

Replies: 10

Views: 5K

Can cosmologist mathematicians compute all the way to absolute nothingness?

Sep 23, 2011 · Replies 40 · Sep 27, 2011

2

Replies: 40

Views: 8K

Could gravity be a convergence of waves?

Sep 27, 2011 · Replies 3 · Sep 27, 2011

Replies: 3

Views: 2K

How Does the Empire State Building Help Us Understand the Big Bang?

Jun 29, 2011 · Replies 7 · Sep 26, 2011

Replies: 7

Views: 4K

Link between Universe mass density and Cosmic Microwave Background energy

Sep 19, 2011 · Replies 3 · Sep 25, 2011

Replies: 3

Views: 3K

Does spacelike separation have anything to do with non-locality?

Sep 19, 2011 · Replies 1 · Sep 20, 2011

Replies: 1

Views: 3K

Quantum Fluctuations and the Origin of the Cosmic Microwave Background Radiation

Sep 18, 2011 · Replies 2 · Sep 19, 2011

Replies: 2

Views: 3K

Gigantic Black Holes vs White Holes: How Can We Know?

Sep 18, 2011 · Replies 5 · Sep 19, 2011

Replies: 5

Views: 3K

Is the Expanding Universe Theory Reversed? A Scientist's Perspective

Sep 15, 2011 · Replies 19 · Sep 19, 2011

Replies: 19

Views: 5K

How do they know what happened in the first second

Sep 17, 2011 · Replies 8 · Sep 18, 2011

Replies: 8

Views: 3K

Dwarf galaxies suggest dark matter theories may be wrong

Sep 17, 2011 · Replies 5 · Sep 18, 2011

Replies: 5

Views: 4K

Intelligent life in the universe

Sep 17, 2011 · Replies 1 · Sep 17, 2011

Replies: 1

Views: 4K

Where can I find captivating videos for my Big Bang presentation?

Sep 17, 2011 · Replies 1 · Sep 17, 2011

Replies: 1

Views: 2K

The Mystery of CMB Polar Anisotropy and its Implications on Cosmology

Sep 11, 2011 · Replies 20 · Sep 17, 2011

Replies: 20

Views: 6K

How do we know everything in the universe is made of atoms?

Sep 15, 2011 · Replies 13 · Sep 17, 2011

Replies: 13

Views: 11K

NASA Discovers Planet With 2 Suns

Sep 17, 2011 · Replies 3 · Sep 17, 2011

Replies: 3

Views: 3K

Supermassive BH feeding on Dark matter

Sep 15, 2011 · Replies 8 · Sep 17, 2011

Replies: 8

Views: 3K

Gravitational Waves: Interfering, Diffracting & More

Jun 24, 2011 · Replies 20 · Sep 16, 2011

Replies: 20

Views: 5K

Unify Fields in Big Bang: Quest for Origin

Sep 12, 2011 · Replies 11 · Sep 16, 2011

Replies: 11

Views: 3K

Has anyone tried Victor Stenger's MonkeyGod toy universe program?

Sep 13, 2011 · Replies 3 · Sep 15, 2011

Replies: 3

Views: 6K

Can infinity fit in the palm of your hand

Sep 14, 2011 · Replies 34 · Sep 15, 2011

2

Replies: 34

Views: 7K

Why Do Scalar Fields in Hybrid Inflation Model Diverge with Large Mixing Term?

Sep 8, 2011 · Replies 5 · Sep 14, 2011

Replies: 5

Views: 3K

How does the expansion of the universe stretch light?

Aug 18, 2011 · Replies 57 · Sep 13, 2011

2

Replies: 57

Views: 21K

Where are the future background microwaves now

Sep 9, 2011 · Replies 5 · Sep 13, 2011

Replies: 5

Views: 3K

So, if space expands (measurements gets larger) in the presence of low

Sep 12, 2011 · Replies 2 · Sep 12, 2011

Replies: 2

Views: 2K

Gravity, information, and cosmology (was Thoughts about the universe )

Sep 7, 2011 · Replies 26 · Sep 11, 2011

Replies: 26

Views: 7K

Where did the freidman equation come from?

Sep 9, 2011 · Replies 7 · Sep 10, 2011

Replies: 7

Views: 3K

Low entropy 3 mins from big bang query

Sep 9, 2011 · Replies 6 · Sep 10, 2011

Replies: 6

Views: 3K

Where would the observation of a static Universe have lead us?

Sep 9, 2011 · Replies 4 · Sep 9, 2011

Replies: 4

Views: 3K

CMb Photons: Finite or Infinite?

Sep 9, 2011 · Replies 8 · Sep 9, 2011

Replies: 8

Views: 6K

Cosmology

Cosmology is the scientific study of the large-scale structure, origin, evolution, and ultimate fate of the universe. It seeks to understand the fundamental nature of the cosmos, including the distribution of galaxies, dark matter, dark energy, and the overall geometry of space-time. Cosmologists explore the early moments of the universe, moments after the Big Bang, and employ various observational tools, such as telescopes and satellites, to gather data that informs our understanding of cosmic evolution.

Key concepts in cosmology include the expansion of the universe, cosmic microwave background radiation, and the formation of galaxies and large-scale structures. It is a field that intersects with physics, astronomy, and astrophysics, providing insights into the vast and intricate tapestry of the cosmos.

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